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SDS2000X Plus Series Digital Phosphor Oscilloscopes
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5:33 Otur 15W Laser Engraver:
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https://s.click.aliexpress.com/e/_d6cHmFB
17:59 Practical Audio Electronics Book + Sharp Calculator
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29:07 555 Sticker Book
31:44 Quitech Otti USB power measurement and battery analyser: https://www.qoitech.com/
1:04:00 USB cable checker: Is it me, or is it USB? Tindie: https://www.tindie.com/products/nerfhammer/is-it-me-or-is-it-usb/
1:06:13 Trump 2020 bucks
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Hi welcome to everyone! Favorite segments: Mailbag Mailbag Huckster Yay! Little Huxley's joining me? Aren't you hacks? School holidays and how old are you Have sleep for four years old and you're turning five soon? Yeah, All right, nearly five. Cool. You want to open some packages? Yep. Yep.

okay. excellent. All right. not that one.

Not those ones yet because I kind of have one already opened. So yeah, sorry spoiler huh? Check it out. It's a new siglent bit of kit. Thank you very much Siglent Eye! It wasn't addressed to my ol' bag, it was just a dress to hear that's an oscilloscope Is that? Huxley Yeah, cool.

Does that look good? Yeah, well. switches it on and it's got it. Doesn't have separate vertical channels though. Unfortunately, it's only got one vertical channel for all four because the screen is so huge that they couldn't fit all of the knobs for each channel.

so we'll switch that on later. Yeah, Does that look cool? Yeah, yeah. Anyway, that is the SDS a 2350 4x4 though plus the 54 X and it's the X plus series of 2,000 X plus series I Believe it's their third generation 2000 series not to be confused with the Mm Mm. this is a 2000 X plus.

Anyway, future video is coming on. that'll that let me know if you want a teardown or not. And they said a whole bunch of other stuff. thank you very much.

sequent. Um, they did. Nice little carry bag. Who's that I don't know.

Is that just a model or is that somebody here said an engineer at that could be an engineer at Cygwin? Cubically okay and symbol bag. would you like that bag? Huxley yeah. you want to put things in it? Yeah, okay. that and we have.

What else do we have? We have made a shirt. a Siglent t-shirt that looks enormous. that'll look awesome for daddy. You think it's got siglent on it.

What size is that? 6? XL just a tad. it's American yeah. I'm like small or medium at most. but yep, there you go.

6 XL maybe I can find somebody who likes a 6 X Ill alright. what else have we got? We've got like a whole bunch of these mystery boxes. and that's the good thing about my Obey Huxley You never know what's gonna be in here. so we have five of these.

Let's go. You want to open that? Yeah, okay, it looks like your slide it out. Wow. it's hidden inside.

What do we go? What's that? Wah wah hello? That is a we're um, screwdriver set Wow Cool. let's have a look. Thank you very much Cygwin, Who are that's in? Oh, hang on it there. Ah, Siglent branded merch.

So sequent. Oh Brent Nice merch. Nice choice. Oh oh hang on.

look. it slides out like that. Oh look at that. Oh, isn't that fantastic? actually? Look, it's a toy.

Yeah Little awesome little compact. We're screwdriver kid. That's absolutely fantastic. nother one.

How many have we got? Is it the same one? I Might have to give him away. they trying to clear out their merch. Are they that looks identical to me? So yep. I think we have.
we got carve identical ones. Take that one out house. There you go the same. I think they're serious I think we've got five.

we are screwdriver sets. so I'm gonna keep one for myself and I'll keep the rest away. So I don't need five? we're Yep, yep, that's crazy dude. that's awesome.

Is it hugs Nick it. the next thing in there is something down in the bottom. Oh that's just the yeah because they came in two separate boxes. That's just the probes and stuff.

Yep, Anyway, um, thank you very much signaling so we'll have a look at the 5000. X probably do a teardown of that theme first. I don't know if anyone's done a teardown to that. Alright, Huck's there you go Wow Fine, we're screwdriver Six! Alright house, you want to open the big one? Yep, um with the we're kits I think I'll give those away to my patron supporters over on Patreon.

So yep, thank you very much. Join me on Patreon. By the way, it's now linked into my Discord server by the way, the exclusive Eevblog Discord service if you join me on Patreon to get access to the Discord server. If you're into discord, a lot of people are apparently I like connected it and all the sudden, like hundred like 500 patrons or something.

Winter already would actually connected through the discourse. So a lot of people use discord. Discord not discourse is talk on the Evie ball forum about discourse. No, it's not.

Go there. my old bag it's from Shinzon Yummy He technology Co I Have no idea. I'm sorry thank you very much. What do we got? This is what's that Huck's can you read any of those words yeah we use oh good wait yeah user.

If you take away the are its use that's correct you us ER that's User User Manual of Laser Master Laser Engraver. We have a laser engraver. Huxley Let's open this up and have a look. Wow! There's so many things in here.

this this is probably I'm not sure if this is something we can assemble for the mail bag, so I'll just leave that anyway. it's a laser engraver. There you go. thank you very much.

So it's one of those. It's just like an X Y So we have like an X Y Well platform Huxley Sure, that's part of the platform that's acrylic on the end. So I've got acrylic on the end and then an extruded aluminium bar across there and it's It's a laser engraver. Cool.

So we'll have to assemble that. And here's what you're getting. the box with this thing. you can get the main I Guess we'll call that the Y X is a shell we because it's Y on the video here and that just fixed in place.

Of course you can just sit this thing on a desktop like this. You don't actually have to mount it on a base. in fact it comes with these little rubber baby buggy bumpers to just sit down like that. And then we have the x-axes arm which all sit and screw on there like that.

and what's the alignment of the bolts in? There's a bit how you're doing but that'll go on. so then that just pulls in the x-axes like that with the stepper motor here. And then we've got our laser module. There it is.
Yeah, from the finest one hung low a factory 15 watt laser diode. I Have heard that it's not 15 watts. so yeah, Marketing Class 4 so I haven't actually measured it myself. but anyway, there's a lot in laser diode.

II Goodness not of course good enough to probably to cut really any like major materials, at least to any thickness. but it's not designed. It's not a laser cutter, it's a laser engraver. So anyway, that was I'm - they're into these two holes there so it's all really simple.

There's very few pieces with it, you just get a couple of brackets and screws and other stuff. That's it. You get some laser googlies and I got a Fed he come Asura adapter not compliant because it doesn't have the insulation on the pins but fit and we got the user manual from Dong Wong Or - Intelligent Technologies Co. Limited assembly a procedure just there you go.

A couple of bolts into their looks. Laser Master Night Laser What? 7 watts. Especially good at picture engraving. 15 watts available for both engraving and cutting.

Yeah, well, I've heard that it doesn't do that. Not to be used by kiddies under 14. This is Eevblog could say that? Well, I'm not allowed to use it then. So anyway, yeah, did a couple of just put a couple of nuts on and Bob's your uncle? Yep, that's it.

A couple of flat washers. Ah, no workers. It looks like you just download the laser Gerbils program and install that. and oh, that's it.

USB Interface should work presumably and you can just load in your images and engrave. That's the plan. Any sort of calibration. Laser focus? Yeah.

I Think you'd have to do some focus adjustment something like that pearl? That's all she wrote. There's not much to it and on the bottom side there you can see that's got a little micro switch in stopper so it can home the thing and Sarah matching one up here? Don't think so. Just slam shut against that. Okay, assembly finished.

Please put this laser engraver in a fire proofing area to give the first test. The confidence is not. I Are a big confidence is not high. They really really want you to know that it's C II marked and hasn't Yeah? doesn't have the correct lined up? see Eva Yeah, whatever.

Anyway, there you go: DC input and USB shame it can't be powered from the Usb. Of course you could have powered it from USB see for example. That would have been really nice, but unfortunately yeah, it requires a separate DC adapter. Alright, I've got my green laser he Google's on and everything look matrix-like It's black and white with a slight green tinge.

I'll see if I can put these in front for you. There you go check that out. That's what I'm seeing. Anyway, let's plug it in.

I haven't got a PC Yep, yeah, it's got a couple of unlabeled buttons. There we go, she homes it. Yep, no workers and I've downloaded the software as IDE and I was dubious as it may be it's an X II Do you have got another isolated machine never trusted and I just loaded in? An example, you can just load in like a JPEG or raster like a image file. and yeah, I am certainly no expert on laser printer.
so I have absolutely no idea what I'm doing I just want to see that it actually turns the laser on and burns something. I Guess so. but yeah, alright, no clue. There we go.

We can do a line preview on that to see what it's going to look like with our three lines per millimeter. That's alright. Nothing or all that good enough for Australia Don't know what the total size of that is though, doesn't give dimensions and just go next and autosize. There we go, we can set our size under a sin that's millimeters I want it like absolutely tiny so I'll go like I don't know 20 millimeters by 20 cuz I don't have any fume extraction here in the lab.

Did not like proper fume extractions I don't know what M3 or M4 laser is laser I've no idea what any of that is create. We've got some sort of weird preview there. It's a processing something I don't know what it's doing. no idea.

Anyway, it does actually connect at 920 1600 connects at the maximum. So yeah, it's all. it's all connected. it's talking I can get it to reset and do stuff well I'll tell you what the problem is I don't have extra icons here that it shows here and one of them is the icon to actually calibrate this thing to.

like do the focus adjust where where it outputs a like a you know, a really low power version lays and you can adjust the dot size anyway like I'm missing all of those missing all of those buttons I don't know I have uploaded updated to the latest version I I've got no idea and it's not letting me do anything in here at all except like operate the menus and do a new thing I can't click absolutely anything I can't manually do anything I know. All right. So what I did is I reinstalled the original one which is exactly the same version in the manual 3.0 1/8 and I didn't upgrade. It tells you when you start that you know there's a later version.

Do you want to upgrade? I did that last time, didn't do that this time. So I don't know now I can press the home in button and it does its little business here so you know it's all communicated. It's doing everything but like, where's the button to actually do what I want Anyway now I do have a manual control look at that. There we go and you can send.

It's actually sending the commands here. you can see the gerbil commands it's sending. There you go so everything's hunky-dory sweet and then I can home that so that's all we're doing as requested. Well, oops.

I finally figured it out I press this play button at the top and yeah, I burnt my mat I should have put something under there. Oh there we go. Yeah, whoops, Screwed the pooch. It works all right.
So I'm gonna run this without calibrating anything I'm trying to get going to try and get my fume extractor near it and so just give it a bill so this is not configured, not calibrated, not anything. I've got my laser googlies on laser gerbils program here. We go. There we go.

Aha, you can see it. Raster scanning, cool and that's really quick. Done sweet. So yeah.

I Know this is like a terrible example and it's not calibrated. Not anything. but it did ultimately do something there cuz you've got to set the laser output power and how long it takes. you know, millimeters per second based on the material.

All sorts of things. You don't calibrate the spot size. it seems like a reasonable spot size and then you've got it Like you know, tweak the software for the preview so that is equivalent to that because that's like it. like it's poorly rasterized there.

So yeah, look, I have no idea what I'm doing. So anyway, you can see that it works and that took of 14 seconds. There's all the G codes that it sent to it and yeah, it it works. So yeah, I'm not sure why I was getting like no control before.

maybe it was the version or something like that. and I'm not sure why all the icons don't here don't match the manual. I mean the manual Like well, how do I calibrate the thing like it's supposed to have all these the calibrate options not there and stuff like that. So I look I've not gonna spend any more time on this for the mailbag, but it obviously works.

so there's the or two laser engraver I Don't think it's a laser cutter I Don't think this thing is powerful enough I don't think it's actually meeting is 15 watts. but that's just what I've heard from other reviewers look I'm not an expert laser printer reviewer. but anyway, yeah, it's cheap and chips. It's simple.

it takes like a minute to assemble this thing and it kind of sorta works out of the box. Um, yeah, it's just a matter of dummy Dave actually using the software and figuring out and all that figuring out the Laser Gerbils program. So if you want a cheap and cheerful laser engraver that doesn't actually take up a lot of room, then you know it might be okay. Check it out! I'll link it in that down below thanks for or to uh to sending that in and yes please! I'm sure there'll be no shortage of people down in the comments telling me how dumb I am and I can't use the Laser Gerbils program and all that sort of stuff.

Anyway, ya know, got a laser engraver? Ya just need to tweak things and you do need fume extraction I don't I have got in the mail literally in the mail bag like a large fume extractor with the you know, the the bendy Will Robinson arm things on it so you'll no doubt see that an upcoming video. Anyway, there you go links down below: its cheapest chips. Ah good work actually is it from its from Kev-kev Robinson in Dublin Ireland I Know all my viewers in Dublin Ireland So you have to do the same thing and get under there. Okay, so cut away from you? Yeah, extend the blade out, cut away and slice.
There you go. What is it? What's that? It's a calculator. It's a sharp for you sharp fanboys. AL or 505.

You know we like vintage calculators. That's a note. What's that like? Christmastime Use that actually. Wow, it's a book, is it? Wow Awesome practical audio electronics.

actually. the forward press book. that's all about audio electronics design. Oh, that looks pretty nifty.

What does can't say on his note? Let's have a look. The Sharp: LZ Mate am I pronouncing Okay, Al Si This was my calculator through secondary school in the 1980s. When the exponent hit 99 is able to shift the decimal point to give a little extra range. Really.

My maths teacher had a calculation designed to overflow our calculators, so I had to work longhand. but we had to update this example after my calculator failed to fall over on cue. Ah well. it's a vintage 1980s calculator.

Music: Aha, you found it. Does it work? It works. Wait, it works. Huxley That's trigonometry.

You? You haven't learned trigonometry yet? Huxley That's a bit advanced. You don't learn that in Kindy. You won't learn those until Wow Probably high school does it give a thumbs up or a thumbs down? What do you think? You've gotta give us a rating from the Hoxton Yeah, Oh yeah. keV Robinson This is Kev's first book and introductory electronics text.

Practical Audio Electronics. As the name suggests, it has an audio slam, but I think it says pretty well as a general introduction. That's why I Saw breadboards in here I Was wondering why there would be like breadboard stuff inside here. Let's have a squeeze a Practical Audio Electronics Oh An audio slant but in general I In Electronics introductory Book: Awesome.

keV A lot of works gone into that tell let us know camp in the comments down below. How long did it take you to write that like that? That's it's probably like years of work. Wow Fantastic. And there's the Sharp LZ Mighty or 505.

Hands up. If you're sharp fanboy or you had one of these back in the day, look at that. Ah, Five Digit Mantissa. - did you'd explain it? Know that? Eight digit mantissa? Rubbish.

No auto power off. fantastic and big clunking on-off switch. Look at that. Beautiful.

It's got your stat stuff as well. It's all happening I Love the little raised metal bit there I wonder what that's for? Is that just pure aesthetic wanker? II Let's crack it open. coupler delays. enough products have their power consumption on anymore.

Look at this now. this myth. Milliwatts on microwatts. Rubbish point.

A triple O five? What's fantastic? Five hundred micro watts for those playing along at home and made in? Japan Well, the best stuffs made in Japan Old-school PCB Check it out. Double-sided job' - Wow Spare no expense, individual watering coming from and look at that separate PCB In there just for the switch and to switch the battery power Wow Wowza Wowza. And it's got these metal backing plates to give you a stiffy Lou this can't ever limp-dick calculator Tada. There you go NEC Job' That's about all.
she wrote much else on there. That's it. Yeah, double sided PCB Not the highest quality fiberglass and they had to give it a a stiffy bar too because that is the contact that holds down the membrane keypad connection. Ah jeez.

Now that conductive adhesive rubbish. Those tab connections. forget it. Metal plate and screws.

Thank you very much so to Kev's written and published a book. Awesome work It I can testify it takes a lot of work to write and publish a book, let alone an electronics textbook like this. So let's have a squiz Practical Audio Electronics. But as keV said, it's applicable to just general electronics use as well.

Published by the Focal Press here and a Kev's a degree qualified electronics engineer, diplomas in Electronics, Music & Sound and his amp taught degree level sound engineering courses and diplomas and stuff like that. Pegasus The Flying Pig. Love it! Anyway, you can send a keV and email it. Pigs may fly at ear comm dotnet so I would just give you a brief flick through let's have a look.

Key Concepts: A Literary Charge Static Current Good. there's no atoms and rubbish like that. Straight nerds, Yeah. Ac Voltage resistance.

Will We get the water analogy, conductors and infamy pure silicon. Then we get into Yep. Diode. Ease, Mains, Electricity and Electrical Safety I Like that.

Obviously getting our practical right up front. I'm Ally Then we get into time domain. It's an eclectic mix. Before you get into components, there you go.

Ah, because this is Practical Electronics. this is more electrical. Theory So Kev's deem that the electrical Theory you need to go are be your basic concepts, of course, your semiconductors, your main safety because you've got to build stuff and a signal, characteristic and measurement and stuff like that and then gets into what components, vacuum tubes, you tube aficionados, circuit diagrams only trying lab equipment goes through scopes. you know, five pages on scopes by the looks of it.

basic circuit analogous Yep, where we've got Kirchhoff's and constructing stuff, actually doing some projects audio ones as well by looks of it and then component reference orgies. It's like half you get into all your nitty-gritty stuff. Me and of course tubes are in here because well, you know they're still a thing in the audio field. and appendices, learn by doing that.

Gets a thumbs up from me. Introduction: A Practical Electronics Electrical Theory loan By doing, let's have a quick squeeze. Keep gonna give away the whole book, but you know I've got to have a quick squeeze up. Yep, the water analogy called it illiterate charge.
So static and study air, static and current, electricity, static electricity, things like that. and he studied wrist wrap. yep, that battery. no circuits and or straight into waveforms.

Direct current AC although I'm not sure that like it's not explaining what the axes are there I guess. But anyway, we've got voltage resistance, speakers, magnetism, magnetism, conductors and insulators, resistivity, all that sort of jazz. Yep, that's all right. Pure silicon.

Yep, yeah well we've got basically to understand your Junction then you've got to do like a page on atoms and stuff like that. Yep, transistors, all the different types there you go. I Like that little tree there that's pretty good. PN Junction types it doesn't get into like characteristic curves and stuff at this stage, but there's no simple like schematics associated with the theory here, so maybe that will come later in depth.

and all those weirdos. plugs, mains, power distribution I don't like that. Look at that. That's good goes into volts peak-to-peak so that's all.

practical. main stuff and safety and things like that. Neat. talking about sine wave of distortion Yeah.

average RMS signal wavelengths. all that's all your recursive formulas are Night neat, neat. It's well laid out. practical passive components I Got four through-hole I guess One criticism I would have is that like it should have because modern electronics is like mostly all surface mount.

I would have had it like a whole bunch of different types there you know, electrolytic sand, then SMD ceramics and stuff like that SMD resistors and like other looking in other inductor, ease and things like that anyway you go photo cheaper d do does but it's a basic level that's neat. Block diagrams are typical block dies, system block diagrams and stuff like that. So this is getting in to how to read schematics and stuff like that. See, it's jump straight into this but we didn't actually look at I don't think we've looked at until now.

The schematic symbol for like a transistor for example. so it's maybe a bit out of order perhaps, but we can get that further on. and breadboards, how to wire up breadboard? So real practical stuff. Neat.

A more elaborate example: there you go. Got some sort of yeah, it's a noise gate, then lab equipment power supply old-school linear power supply. great stuff. old-school function gen with the buns either.

My other 10 other Vichy multimeters a micron to analog. Oh, get into our CROs as we call them here. A huge amount of scopes though, but enough I'm sure. basic circuit analysis.

then get into your Ohm's laws and you transistor symbols. Here we go. Here's we get into our practical symbols and stuff like that so you could argue. Maybe a bit out of order, but maybe there's a reason for that because I haven't sat down I'm just flicking through this thing.
We've got our resistor color codes. There's no, this is not a color printed book. hence there's no color in here. It's a black and white printer book, but that's cool and groovy.

and Oh pots and tapers and things like that, not as capacitors and inductors. Then we get into our impedance stuff and things like that. This looks. This is pretty good.

Once again, there is no perfect one Text: I've done reviews of electrical textbooks before. no such thing as the perfect textbook. Everyone's different. everyone learns different while I recommend you just have many different types and whatever clicks with you is you know is the wonder or your different symbols for your trainees.

Fantastic! So a lot of works gone into that good on your keV I Actually, rather like that. that's quite good. That's well worth looking at. Oh like a Lincoln down below if you're after, sort of like an in introductory electronics text with a practical and perhaps audio bent to it on you.

keV Huxley wants to hit this button? Don't you hacks? Yeah, cuz that means that Yeah, when you fail or lose something, that's that's the sound. Okay, you want to open another one. Yeah, it's already opened. Um because silly me, didn't see mailbag on it.

so have a looking there. who's it from that doesn't say uh Dave's deals. Thank you very much. Dave Oh yes, days deals.

Five Five five stick of fun spaceship. It's a triple five actually. I'm not wearing much of a runtime a t-shirt I'm wearing at my Flux Capacitor t-shirt available down below on my merch store. Yeah, my hand-drawn it's a Triple Five timer.

Huxley That's awesome isn't it? Let's take a look. It's a sticker Fun Intergalactic space station. Where's our stickers? Ice in there in the back? Are they Alien threat? So we've got to stick them. Alien attack? Hang on.

Yep, there's our stickers. Oh wow. look at them. You got all little little spacemen and what else.

Uh, all sorts of stuff. It looks like you can actually construct things with the stickers. This looks pretty good. That's the Triple Five sticker.

Fun spaceship. thank you very much. Um, I don't know it came from Dave's deals. Hearing a Castle Hill man just practically next door to here.

So I assumed Dave's deals is just a book store and somebody has sent me this. So thank you I'm to some unnamed person has sent this. Thank you very much. That's very cool, although obviously it's got nothing to do with the triple Five timer.

so whoever wrote this obviously had no idea that about the triple Five timer. But anyway, it's Triple Five timers. Sticker Fun Spaceship Awesome. Next box or attic.

It's a sick and suck of the mailbag south. We've got a note and some stickers. increase battery life of your devices and apps. It's an AA T all-in-one hardware and software tool for energy optimization.
Oh okay, it's a it's a parameter thingy. It's an energy optimization power logger something or other. Let's take a look. it's from the Queen Tech team.

We saw a few discussions in your forum about RT so we thought you might be interested in forming your own opinion. I Hope you have a great use of RT Looking forward to more topics on energy optimization and long battery life in your channels is really needed in the communities. Thank you very much. The High-tech High-tech High-tech Do you think it's quite ik or Quetta quite ik good one Hats thank you very much to the Quick team I'm sure I'm not proud.

Cinelli Anyway, all you want barbar and software tool for energy optimization for measuring current. Looks very simple. Let's crack it open right? What do we get? Oops I Want to show you the activation code and beautiful. nice fancy box.

I've got a USB cable it just plugs in and that's all she wrote. max five volts. So yeah, it's only for a low-power electronics. You're that one who were you know, accidentally overload the thing I'm sure it has some sort of protection in there and it's got some GPIO and stuff like that which is nice if you want to sync stuff up.

looks like external ADC and sense as well. That's terrific. Met like if you're running your own external shunt or something like that current shunt or something like that perhaps or measuring the voltage because this is probably I don't know. does is this the current shunt or as or as the sense I do know RTFM Dave I Assume it can be powered through the USB because of all they've provided as a USB cable.

So optional DC in Oh I think it actually this is used to power your device. so the current shunt and voltage measurements going to be internal. but as I said, you can get external because it looks like you don't just connect it up to your computer and then connect it your Internet of Things doodad up to the output port. So yeah, does it like I Guess you can program the output voltage like you know, 3.3 maybe 5 something like that in that case.

um maybe that's what that's for is to power. um maybe not all of it comes from the US speed up. did yes, um online manual or it's just all around. it's just all around.

Ah, this feels beautiful. Anyway, there's a couple of heat sink out screws in there I've taken off the backplate so now that should just slide out. Ah beautiful. Well the first thing that strikes you is check out all the holes they've drilled in there.

Look at that. Well I Guess that's one way to do your isolation. There's just a couple of tracks coming out of there you can see. You know, just poke in there, head out there like that.

but they, um, there's a label on here says that production test fixture whole don't remove. So yeah, they've got like a pins. maybe you know, go into opposite corners. And yeah, that's the production.
Better nails. Anyway, it's upside down. Electrons are gonna fall out. eighty Sam Froyo eighty Atmel Sam fanboys.

and oh yeah, there's more production test fixture holes over there and cheese. These components really placed close to the edge there. yes your assembler about that. Normally you want some clearance from the edge, but anyway, now you can do it.

Or ground fingers are they anyway. got some real relays on here. So yeah, here's our here's our DC input. So looks like do we have like there's an absolutely no components on the bottom? this heatsink on the bottom here.

this all okay. It's alright. it's screwed into there. okay right.

so it's coming through. You can see all the thermal vias here. so yep they've got just got a insulating seal pad under that. So there you go and we're good out.

Do we have a couple of MOSFETs down there? There you go. They just little different range. current, shunt resistors. They're tiny.

It looks like a common mode choke. Not probably not going to try and reverse engineer this thing to tell you what's going on here. but anyway, it looks like it does actually supply the power, just measures. it uses some shunt resistors and and basically measures the voltage is going to be measuring the voltage and current.

But anyway, what parts do they use on there? Can we see that it's an analog devices job'? Yep, no surprises. for fine Eighty Seventy 192 which is a 24-bit Delta-sigma analog front and it's got like a program will gain amplifier and multi-channel MUX and stuff like that looks like maybe a beurre Brown voltage reference it I Don't know why they have a second one and the second ones. not populated. but yeah.

anyway. AB So yeah, just a big expensive analog devices. PGA Front end. Let's just handle in all the external stuff happening here.

So and of course it's not necessarily the hardware, it's about the software on something like this. But having said that, the hardware looks gorgeous inside and out. So yeah, thumbs up to that. Did well.

Well yep, you can see how serious they are by looking at the website here and they have two different versions: standard and Enterprise. They've given me the license number for the Enterprise Anyway, it runs on Ubuntu Windows and Mac OS for you Mac fanboys. So it looks like a real professional solution here for energy like product design, energy optimization. So here's the standard and Enterprise Hour version.

You know, battery toolbox, your calibration service, the extended tech support training bioengineers. so if you want to, you know forgot any issues and you're all you want to be trained by them. Get the Enterprise version and you know how much does each one cost? Tell us the price. son.
Anyway, apparently Sony use one. So battery pro. Oh oh, Battery profile Wow It's got a lot. so have a load.

Got an electronic load? does it to find the best fit. Several create discharge profiles. Ah, there you go. It does battery discharge.

Wow Do it. That's interesting. Um, why all the squiggles while the wiggle-wiggle-wiggle year on that grab? Because it's something's cycling there. Okay and a battery emulation as well.

Wow Geez, yet not. this is more than just a like power measurement thing. This is doing a lot more battery profiles. Yeah, Four different types of batteries.

can you? It looks like mave or github. It's got github e things look I could probably spend like an hour doing a review of this like as in a and edited hour and take me like days to actually do a proper does. Log in and book a demo. Where do you started? How do I buy it you know I don't a book a demo and I buy standard I can buy it on digi-key no workers.

Ah, and your subscription. Yeah for the battery toolbox. all the fancy stuff, but they've put a ton of work. That is a metric crap ton of work to actually develop that.

sort of. So yeah, I Yeah, you can buy it from seed and all sorts of stuff. So there you go. Let's just assume we're a Yankee Doodle Dandy Eighty-eight in stock.

There you go. Five hundred and eighty A Yankee bucks. But yeah, five and eighty bucks sounds like a lot. but it's If you're developing serious about developing products, it's probably not.

It's not a lot of money for what I'm assuming is going to be quite professional software and support for this thing. These guys are serious. Not some Johnny-come-lately is 575 bit cheaper at sea. Anyway, that's the standard version.

So I think the Enterprise version means that we have to actually buy? Yeah, I think we have to buy the annual subscription. get you? the Enterprise version. does it Five hundred and sixty eight a year, a license for one year on the Energy Mayor and Men in a Minute management I'm sure the standard one comes with you like a one-off Yeah, it's a one-off thing. but yeah, if you want all the advanced functions and stuff like the battery simulation and things like that I've got a battery simulator here and it's thousands of dollars for a battery simulator like physical Hardware simulator.

This thing will do it along with their software. So the RDX is both a power supply to your inner things device as a current and voltage measurement unit provides up to five volts output at five amps. Okay, nice. It runs nano a presen current measurements with a sample rate of four K sample per second.

Of course you can't get the entire dynamic range from five amps to nano amps even with the 24-bit Delta-sigma So it's got to have either auto or manual range. and I don't know if it has Auto ranging. Auto ranging can be tricky because your it depends on the capacitive load you got in the bypass and all that sort of stuff. Your product, your micro or whatever it is that's changing states from high current to low current can actually hiccup if you try and auto range because you've got to auto range that current sense resistor which is in series with your load your product under test and if it suddenly goes from low current that like as you know you're measuring your nano amps, your micro amps or whatever and so it's got a high value like a 1k series resistor and then all of a sudden tries to gulp you know and pull that power that it needs like it suddenly jumps up to draw in an amp or two.
Then it's got to take that from a we can't take that through the 1k current shut resistor that's currently using so it needs to take it from the bypass capacitors, all the output capacitance of the product of the device like this itself actually parent the power supply powering it before then the system realizes all I'm drawing maximum current I need to current range back up. It's actually it's it's real tricky business to auto range stuff like that, especially if it's constantly changing or we can anyway. not for that. start measuring, start, recorder, analyze and stuff like that right? It's a shame that they didn't like.

Provide me like an example do Daddy product that I could just plug in and would you know like cycle through a few currents and things like that? that would have been neat. So yeah, it looks like it's fully programmable. You can use the GPIO to via scripting. Yeah, it does scripting.

I thought it had to. Yeah. so you can trigger your software and once again, you could actually program into your product. If you're doing development like this, you know what tool you're using like this.

you might actually program in, have a few spare IO pins on your micro and then you can program it to output various things or receive inputs from this thing that allow it to like power into states and things like that. In fact, you can even build that into your production, then build that into the software product and use this device as like a production testing bit of kit where you can tell it right I'm gonna like you hook up the wires and everything via you know ever your bed of nails thing or just a manual header or something like that coming from this device and you can use this as a production test. This anomaly is a power your product but then it can via a scripting I don't know a scripting language? Anyway, via scripting you can like make your Micah make your product change into various modes and you can measure the power consumption to make sure it's all correct and within spec and all that sort of jazz. So yep, really, you know you can probably do some really powerful stuff.

There you go. Timing milliseconds. looks like goes down to the microsecond timing and stuff like that I Saw there? Yep, here you go meters and things like that. Ah, look I could I could spend a week playing around with this thing.
Oh wow, this looks really professional. I they're ticking all the boxes I think and then the battery toolbox. Speaking of ticking all the boxes in your tool box, here it is. Pick the right battery DC power supply, feature profile and emulator that's worth its weight in gold.

Seriously, if you're developing a product and you're real, you know and intent. Like if you're developing a new SmartWatch fangled SmartWatch or something like that, you know it's it's critical. You'd spend months. just like choosing the best optimum battery and power and solution and stuff like that.

just R&D in that really? So you need something like this, that's okay. Battery Emulation: It can act as a battery following a discharge curve like fantastic. That's great. So you can do like low profile like low battery discharge testing your product without having to wait weeks to actually discharge Like real batteries.

Or wait months or a year or something like that. If you've got like a real low power little farting novel, ready gadget or something like that that you're developing, then yeah, you don't want to wait a year for your batteries to die to test your thing, or gonna get a clunky power supply and stuff like that. This thing can give you a nice profile. That's nice.

Wow Yep, something like that would be worth you. You know, five six hundred bucks subscription. You know needing it once again, you'd only need that for a year wait when you're developing your product and then you know you might not need it. You? yeah, that's I'm liking this.

I Think you need the intercrop Enterprise to get the script in? Ulua After all you lure fanboys, there you go going wild. I'm sure I've heard about it's all the rage apparently. TCP Server: It's got the kid hubs and once again, the battery profile. Okay, that comes in the Enterprise Edition You get the battery profiling and stuff like that.

Cool. Ok, I'm downloading, installing and it looks like it's just like a serial port in a face. So whoop! Setup failed. That was the Microsoft II thing setting up launch.

didn't do anything I swear I just pressed Yes, please install. There you go. There's all the release notes so it's been around a while. Yeah, it's been around for a Raji's been around for 20 18.

This is old school. It's been around for a long time. so sure 2017 so it should be 2016 so it should be really polished. Wow No workers.

why kind of clothes that okay so we can power supply current Voyage logs there. The thing I don't necessarily like about it is like why? Well I have a DC jack here to power things I Would have liked to have seen like another couple of banana plugs on the back side I can plug that into my bench power supply that one like a Dickey plug pack. a noisy plug pack going into this thing I Want like I want the banana rejects? That would have been better? Yeah anyway I assume like it's already found it. Supply Arc Okay, it's all supply on OOP Something clicked all supply off I Can hear the relays clicking.
so yeah, it just it just worked. Just connected and didn't even have to connect. it just automatically. Did it Nice.

Okay, the supply comes from the power box. That's our only option. There you go. Main Voltage I don't Iike I Thought they said it went up to 5 volts.

Oh if it comes from internally, right? No, it's still gonna let us do 5 amps even though we've plugged in zippity-doo-dah from it. So yep, it's got auto-ranging There you go, Uh-huh there's Auto range here. you go choose if you want the arc to switch automatically between different measurement intervals. When the boxes takes, the higher measurement accuracy interval is used if the current is between 0 and 90 milli amps.

However, the Arc would not be able to keep constant voltage in this range for voltages above 3.75 and USB 4.55 supply voters Sa plug. So it looks like it can actually power your products through the USB So that's kind of like in the low current mode. so that's really cool. Like if you're working on like low priority? yeah, low-power Internet of Things You know, smart farting watch or something like that.

Great. Excellent. So you don't have to dick around with an external supply. That's neat.

Yep, there you go. Anything under 19 milliamps? Nice. No. Abbi No, you even get more at a USB.

Ah, would have been nice to have like yeah, 100 milliamps? 200 maybe. Anyway, yeah you can disable the and a DC current. Ah, there's your external current shunt resistor value. There you go.

Nice down to one milli ohm sweetie does. Since folders you can turn on your GPI is you got lugs, you got info and you can name. You can have multiple units which is handy I Presume: you can have multiple units. Um, nothing else over here.

Yeah, because I I'm sure multiple units would show up here I'd be stunned if they didn't write so over current protection. That's nice. see why it would? It knows that it should be able to sense that you've plugged in an external voltage in and it seems that then you switch over the five amps it should automatically. but I guess it's automatically current limited to that 19 milliamps anyway.

if you parrot it. Okay, fine. forget I said it. Alright, so I'm gonna set that to 3.3 doesn't matter what our current limit is now.

cut off. That's a difference between cut off in current lip. Oh It'll physically limit the current, otherwise it'll actually trip. That's nice.

Alright, gotta find something to plug into it. Assume I'm designing a multimeter, which is nice. You know it's drawers. It's I Think this draws like a couple of milliamps.
When it's on, you turn the backlight on. It might draw like 15 milliamps or something like that works from a 3 volt battery. So give it a bell. Okay, so don't 13.3 I'm gonna 3.

There you go, Ya know, a ploy. Multimeters not working. what's up? Have I not switched it on Power switches. Ah, 3 volts.

There we go. turn supply on, calibration recommended, warmed up and all that sort of stuff. Nice. So yeah, 24 bit here we go.

So I'm gonna switch it on and my multimeter I'll put my multimeter. well no I'll turn send You see? Yes lieutenant. Um no. this doesn't have a sleeve current because it's gotten physical.

or does it's got a physical off position. So let's turn it to voltage mode. There you go. My multimeter has switched on sweet and arc main current I expected like it did nice like I Want to read out I want like a 7 segment display readout I don't just want to graph recording CDI you've got a record it said you start I just like to see a live 7-segment display.

That'd be cool I Don't like how it automatically zooms in like that I think that's that's a bit how you doing ID in your face I'd much rather I I know that's the algorithm but so it's detected the minimum and maximum current peak. so know what they're doing here. they're detected that but I would like then just double the range or something. triple the range five times the range just so that you get like a you know I Don't want to see all this like these are obviously like these are individual bits.

obviously like we're so zoomed in like we're so down in the resolution that these are individual bits and I don't like that I'm just bombarded with that. but anyway Oh After having said all that, it's done that down here. Oh right now. look, it's got larger Peaks Oh, it's soon.

Is this a zoomed in version of down here? So they've done what I was thinking down here. So look, it's taking gulps of current like every like what five singer. why is it every five seconds it's taken them? I mean I'm gonna press a button and see what happens. There we go Wow look at that.

That was the buzzer. So there you go. 700 milliamps for a beat. There got some undershoot, right? Because probably the long leads on this, right? We're not probing this thing.

We're not probing this thing properly. We're getting massive undershoots on that. Of course, it's not drawing negative current, right? It's dropping below. Like okay.

so the base looks like the base current here. Can I stop this? How do you stop? Okay, so why is it showing 10 like I'm pairing this internally. Why is it showing a negative current it should? No, it should get the polarity correct. So that's a bit weird.

I'm not sure. May I maybe it'll come to me why it's doing that, but at the moment like it's showing minimum right? I'm looking at this one down here. right? Minimum: Where's the like? It should show like a cursor value should your cursor value. but it's not.
it's just showing. Can I Like drag? Yeah. I Can drag? Nice. Look at that.

Yeah, that's great that that just worked exactly as I expected. So if you wanted like the average energy, it's got none. Oh What hours in there you know for inside that then that's really quite nice. So once over a time period, you know, six point three micro watt hours over that time period.

If I Yep, if I use my mouse II wheel that zooms in and out. that's really quite nice. how do I can I uh how do I drag do I use my all I Expected to use my right button there right mouse button but all I'm getting is fit height fit with save as PNG Very nice down sample Oh Interesting. Oh that's nice.

that's useful. No I'd like to be able to use my mouse Anyway, you just drag alike. Maybe there's some way to maybe I can hold down a button and not know. Anyway, there you go.

So if you want the current from you know that are there or energy from there to there seven microwatt hours. that's that's really quite nice. Just you know a little little things really. I'm just nitpicking about is that like it shows minimal like at that point.

At that point there should only be one value at that one point, there's no such thing as a minimum maximum average because we're only one sample point right? so it should give us the cursor value there. So anyway, my multimeter is drawing there. You go to point 2 milliamps like two point three milliamps on average and then when you include, you know if you include that over the range what is that Five Three point three milliamps if you can choose that time period. But over that time period there the average is only two point four three.

So you can see that I'm getting like you know here. Oh your candor I can slide the window Nice. Okay, yeah, I'm liking this. Sorry.

Anyway, so yeah, you can see that like the average over here is two point three and you can see how you know having the occasional current pulse like that even though he goes up to like seven, eight milliamps or whatever it is, then it's You know. it doesn't add much to your average current consumption there because it's just a brief pulses divided by the time. So you know. Anyway, that's really cool, whereas if I did a tiny little window there, you'll find that our average is man gone to five point one.

Funny that because we're averaging over a different time period. but that's that's really quite cool. I Like that. So there you go.

That's a um yeah I just like yeah, like so yeah, you're on. you're recording. We can overlay with the different currents and things like that, so fit with okay so we can fit. Oh okay cuz it's got to catch up because we've got the other window and yeah, okay, no worries.

Go to time. Any wings which our grid off and on? That's good. Oh don't silly me, this is a DC current. This is a DC current.
This comes from our analog to digital. Our external input there which we're not using. We've got nothing connected. That's why it's just flapping around in the breeze with a couple of bits.

Okay, right. see that wasn't obvious. The main current is the banana. Jack's on the front.

These banana Jack sparing our product and that's what we're looking at. that's our main current. This thing here is the ADC current. That's completely.

it's obvious people would probably screaming at me. anyway. try to Yap at the same time. Ah, it's hard being a video blogger, you know.

So yeah, even if I go like that boom boom boom our top one doesn't change because we're doing zip-a-dee-doo-dah we're not doing that at all. I would have put that on top like I would have had actually by default when this thing opens I would have had not had the ADC current displayed at all. really. Anyway I like that it like it doesn't bother showing voltage because it's just constant voltage.

It doesn't bother with any of that junk. it's well you could argue that you know it's not. It's fine, it's just focusing. it's giving you the to current waveforms.

I Know why they do it because they have to measurement paths. They have one as the BNC input one as the pin header input for the ADC. So yeah, like they should have caught it like like a DC current. I don't know maybe external carton but they're both external.

but anyway, hold up with the main one on top. There you go. that's groovy. So can we like clear all that so we can nuke that right? We can delete it, We can stop that and we can nuke it, So here we go at that because we've got auto-ranging set.

It's 0 to 1 amp here and if we simply switch it on like that, then it's it's all open. It's automatically auto magically. Auto arranged down here. So yeah, it looks like hell.

Our meter is just periodically taken like in the or like over. the scaling could have been like where's the zero here Like that. The scaling could have been better there. I'm not sure.

like show me the zero. Well, no, you don't have to I guess because then you expand the waveform. But anyway, yeah, scaling could have been a bit better there. That's all minor gripe and then it'll of course it's not Auto ranging when I when I press a button, that's just.

you know it's it's auto scaling. but it's not physically changing the range in the hardware itself. So yeah, that's groovy. Well if I turn the backlight on.

haha. There we go. and so our average cart. You see how it spiked up to sixty odd Miller wall.

It's only supposed to provide 19. So there you go. Did it like? why? Why is that? You know? Why? is it? Let us do that I wonder Anyway, and then we can move our window over to here and we can zoom into here. Oh hi, You can see the step over there.
There you go Gotcha! Here's our backlight is that our load looks done the same thing there and then boom on all I Said was that the buzzer? No, that might be the buzzer doing something. Anyway, we do have a huge spike up there, which is presumably beyond the range of this thing. It's going up like it's almost like it's clipped at the top there. it's only supposed to be 19 milliamp range.

but see if you can see that, this is a very useful tool right off the bat. Like we're not even getting into all the bells and whistles of this thing, all the scripting and when everything else. all the goodness that you can do with this sort of thing. But there you go.

It's got higher noise up here, which are that'd be the backlight. Oh that would be the No. I don't know it's a lid. this distance doesn't have a backlight inverter.

It's going to say it's not. It's not a backlight inverter generating noise, but this has a this is like noisier up here than it is down here. See that I wonder why that's interesting? Hmm. Anyway, let's turn it off.

Oh I need to fit fit width. Yeah, there we go. Once again. yeah, look, it's drop down below negative there so that is a function of your probing.

Oops, there we go. Yep, got a real brief period there of where it's dropping negative which is not. Oh, and I know this could measure positive and negative currents. Can it I Assume it's bipolar? No, it's not because we're the single supply so it shouldn't be bipolar so it's going negative there.

So yeah, yeah, probing is a big thing. - yeah, that's cool. If we stop that, what can we do with that offset? We can jump to an offset and I think we can export that file and save project. Yep, export CSV Nice offset by selection.

Oh, here we go. We can disable silly Maila We can disable our ADC current down there. There you go Fit selection. Can we play? Can we like set like an auto scroll playback show statistics for all recordings.

Oh okay. there you go. We can turn that off and on. Oh, it overlays them on the graph.

Okay, that's cool. Meters: Uh-huh Here you go. Our meters are down there that they weren't there before. were they no should switch those on by default.

I Don't know why you would not have those on. why wouldn't you have those on? There you go. That's your live update reading down there. Yep, they definitely should have had that it's got internal temperature sensor to that's just becoming from the the Sam Die get it for free.

so that's cool I haven't even gotten to I Look as I said. I could spend ages actually reviewing this. Ages actually reviewing this. But but the software looks quite polished, very professional and like we haven't even gotten into the really cool stuff that you'll admittedly pay a fair bit of coin for.

But I suspect worth every cent you doing battery simulation and and stuff like that, that'd be absolutely fantastic. They they they like separate tools I assume because like we've just got logs. What's this? Wait, why do we set our board rate for a you are? Oh, why is that under logs? Anyway, yeah, this is like a professional power measurement tool. They've done well here.
You can see the spit-and-polish in this I think that's being what is this. three. Four years old, three, four years in the making or something like that. They're continually releasing new firmware and new versions of the software and it shows.

It is actually quite polished and pretty much works the way I expected. just like little minor things perhaps. But yeah, that's it. It's really quite jazzy.

So yeah, that's very nice. Thumbs up to that high tech. What is it the AH T So yeah. I've got a I've got a two-week trial license activation key of the enterprise version so if somebody does want me to, well I'm on my Stephen maybe I've got like a real you know I'm gonna need need it for some application or something like that.

So yeah, that could be that could be really useful I do have a battery simulator here, but it's a big clunky. it's an old clunky Keathley 2302 for those playing along at home I've ever I think I've done a video on that anyway I do have a battery scene. never know, tear down on that battery simulator. so I'm yet.

That's very cool that if you're developing any sort of product that where battery you know measure it like power consumption is important and stuff like that. Seriously, have a look at this tool. Maybe like you can probably download the software like a demo mode or something like that, but anyway, you've seemed to seen what it can do. It does all the basic stuff and I have no doubt that it does all the advanced scripting stuff and things like that as well.

Awesome! Thanks Coy tech! Nicholas Pissarro thank you very much Nicholas easing that San Francisco out of all my San Franciscan viewers hi Dave I'm eat that made these after getting burned a couple of times trying to program in Arduino etc with a spare USB micro cable that turned out only half power and not doddle eyes yeah I mean caught by that many times have been doing a video whatever I'm reaching like search around for a random USB cable to go in and I wonder why the products not working. It's because yeah it's only like a pale cable doesn't have the data lines. Um, it's crazy actually. I reckon fail for those USB cables that don't have data lines.

Yeah, well done mate. Awesome! Yeah, nothing worse than those. They're really annoying. I Also learned that deadlines are necessary negotiating large currents.

Yes, they are. So is this a oh it's just like a breakout II thing with various resistor values. Cool. Take a look, these are handy.

Always have like I did lost count of the number of times I've used. Oh, that one's gonna battery on the back. That's interesting. Why do you need a battery? You can pair it from the USB Yes sir.
Next package. Aha so this is Nick's little doodad. Ah, it actually I figured that's why it needs a battery. You plug your cable in like it Lutz through and test it.

Great! Twitter handle by the way. high energy beams. absolutely fantastic. You can get on the tinder you store down there and check it out in the cute oops upside down electrons gonna fall out.

Is it me or is it just? it's nice and of course it's just gonna check out all of the data cables up there. USB micro cable and human sanity tester that's worth every cent. Love it! Link down below. good on your neck.

It is from Mark Cold. Well thank you very much. Another one from the United States of America If you couldn't tell from the United States postal colors there, No. I don't think you'll get that hugs.

Do you want me to slice it open? Yep, sliced open. This one's going to be a bit tricky. Okay I could have gone the other way. Yeah, what have we got? Obviously it's not a front like Oh What are we going? Really? Really? We're getting political here on the Eevblog died playmate like my viewers.

I Do I Panned everything on camera. There we go. Totally a file. Give it a fire.

Hawks Trump Fox The Trump 2020 Huxley says a fire. There we go. That's WoW Is that a file to hacks? Yeah. Nullify all your feet? Yeah, But he will win.

It's practically guarantee. Practically guarantee whether you like it or not. Um, yep. there you go.

Ah, the In God We Trust on the currency. Only in America All right huh? Thanks for joining us on the mailbag. Sigh. Catch you next time.

Well done. That's oh. you're tired now. I Do yeah, that was a lot of effort at me in those packages.

mate. You.

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27 thoughts on “Eevblog #1304 – mailbag”
  1. Avataaar/Circle Created with python_avatars Joreem McMillan says:

    Thanks for sharing, Dave. :).

  2. Avataaar/Circle Created with python_avatars lnpilot says:

    Wow, I thought that was Sagan. It's crazy how time flies.

  3. Avataaar/Circle Created with python_avatars aft says:

    hux is adorable

  4. Avataaar/Circle Created with python_avatars DAVID GREGORY KERR says:

    It is like a CASIO FX-39, Nowadays amplifiers are being implemented in Math using DSP chips and ADC and DACs.

  5. Avataaar/Circle Created with python_avatars hardergamer says:

    Your little man is so cool!!

  6. Avataaar/Circle Created with python_avatars Monchi Abbad says:

    Use the laser engraver to cut the tape of the packages by engraving the tape 🙂

  7. Avataaar/Circle Created with python_avatars Ivo Trausch says:

    Gee those free laser goggles always instill confidence. The ones we use at work are more expensive than that laser engraver.

  8. Avataaar/Circle Created with python_avatars hotlavatube says:

    I recently fried my old multimeter and was excited to buy one of yours, but I just couldn't do it after I saw you wading into US politics like this. I did agonize over this decision for a couple weeks as I still respect your skills and advice in electronics. While I know you've been critical of the solar border wall and such in the past, I think your stating the unsupported inevitability of re-election performs a disservice that I do not want to support monetarily. In the end, I bought an Amprobe 530 which will suffice till I build up my skillset further.

  9. Avataaar/Circle Created with python_avatars Samantha Fox says:

    Bloody hell, I thought that was Sagan and I was watching an old video from years back. What the heck, wasn't Huxley born last Monday?! Time flies!

  10. Avataaar/Circle Created with python_avatars OfficialSlicked9778 says:

    it says "right click to add custom button" on that bar, does that do anything? maybe you have to manually add the shortcuts yourself through that.

  11. Avataaar/Circle Created with python_avatars Alexander says:

    should‘ve named your second kid „Karl“

  12. Avataaar/Circle Created with python_avatars Steve Tobias says:

    May I please have a screwdriver set if you still have any left . .

  13. Avataaar/Circle Created with python_avatars Steve Tobias says:

    I recently purchased a Siglent SDS1102DL+ Oscilloscope. My first scope, could not afford the 2000 series but I do like their scopes. I am just a DIYer so I am learning every time I watch your videos. Please keep them coming.

  14. Avataaar/Circle Created with python_avatars Pietropix123 says:

    Nearly 5 years old? Hi Dave, it's time to gift your son his first multimeter! 🙂 Cheers!

  15. Avataaar/Circle Created with python_avatars Peter Sage says:

    Gotta challenge Dave on the Trumpbucks comment. To quote Paul Simon, "The words of the prophets are written on the subway walls and tenement halls." Go amongst America's impoverished lower classes and you will find a silent well of opposition for the Donald. Many of these people did not vote in 2016 because they thought there was no way such a laughingstock would win; they will not make the same mistake again.

  16. Avataaar/Circle Created with python_avatars Michael Whitworth says:

    I will take one of those Screwdriver sets.

  17. Avataaar/Circle Created with python_avatars Techalyzer says:

    Life goal – grow YouTube channel big enough to receive a frickin laser engrave for free.

  18. Avataaar/Circle Created with python_avatars Daveyk021 says:

    @eevblog When you review the Siglent Scope, please check if you can specify the mid-reference levels for Pulse Width measurements and the reference points for the slope measurements 8-).

  19. Avataaar/Circle Created with python_avatars Mak Kazemi says:

    TRUMP 2020 USA

  20. Avataaar/Circle Created with python_avatars Markuksen mietteet, rakentelu ja koodaaminen says:

    Now im envy for you because all that merge stuff… 😉

  21. Avataaar/Circle Created with python_avatars Polite Cat says:

    The whole "correctly lined up CE mark" and it supposedly meaning "china export" is just a myth. It's often spaced a little different depending on the item, and if they're gonna fake the CE mark, they're just gonna fake it. No BS spacing involved.

  22. Avataaar/Circle Created with python_avatars Stefan Johansson says:

    Please do a full review of the Qoitech 👍🙌

  23. Avataaar/Circle Created with python_avatars SaturnV2000 says:

    Would it be any better if our (U.S.) currency read "In Government We Trust" ? There's a good reason "God" is used . . . the freedom of people in the U.S. is granted by the creator God, not by our government . . .

  24. Avataaar/Circle Created with python_avatars Sword Fish says:

    Dave, have u done a video on soft start circuitry for power tools (table saws, miter saws etc.)? How do they work and what kind of tools are able to use them etc.?

  25. Avataaar/Circle Created with python_avatars scottyleics says:

    Please do a full review on the power unit. Please learn how to use it properly first though, the review on this one made you look like an amateur and we all know that is far from the case. Not often I am disappointed but the review in this was very poor.

  26. Avataaar/Circle Created with python_avatars Davood Seify says:

    cute boy 🙂 he will exceed you very soon sir. (exceed in knowledge)

  27. Avataaar/Circle Created with python_avatars James says:

    Cutest video ever!

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